Standard bank shots rely on the principle that the angle of incidence equals the angle of reflection—though factors like cushion "mushiness" and ball spin can alter this slightly.
Pocket billiards (pool) is a game often perceived as one of intuition and dexterity. However, at its core, it is a pristine application of classical Newtonian mechanics, rigid body dynamics, and friction physics. This article explores the fundamental physical principles governing the motion of billiard balls, including elastic collisions, the vector dynamics of spin, and the coefficient of friction between the ball and the cloth. the physics of pocket billiards pdf
In 1835, physicist Gaspard Coriolis (famous for the Coriolis effect) noted that the path of a spinning cue ball after hitting another ball is actually parabolic due to the interaction of spin and friction. Standard bank shots rely on the principle that
This forms a right-angled triangle. The object ball travels along the line of centers (the line connecting the centers of both balls at impact), while the cue ball deflects perpendicular to that line. The object ball travels along the line of
If you’re compiling your own PDF, ensure it includes high-resolution vector diagrams, a glossary of terms (squirt, CIT, COR, etc.), and practice drills that test each principle.
The total momentum of the system (cue ball + object ball) remains constant. This is why a "stop shot"—where the cue ball stops dead after hitting an object ball full-on—is possible; the cue ball transfers all its momentum to the second ball. 2. The Power of "English" (Spin)